11%砜嘧·精喹可分散油悬浮剂对马铃薯田杂草防除效果及产量影响

Effect of Rimsulfuron·Quizalofop-P 11% OF on Weed Control and Yield of Potato Feild

[目的]明确11%砜嘧·精喹可分散油悬浮剂(OF)对杂草的防除效果,马铃薯生长的安全性及产量的影响。[方法]通过室内及田间试验,测定11%砜嘧·精喹可分散油悬浮剂对马铃薯的安全性、除草活性、除草效果及产量的影响。[结果]11%砜嘧·精喹OF在有效成分用量为900、2250、3600 mL/hm^2施药后45 d对一年生禾本科杂草稗草、谷莠及阔叶科杂草鸭跖草、藜、酸模叶蓼的平均鲜重防效分别为76.67%、81.89%、85.89%,防治效果较好。对马铃薯产量增加显著,增产率分别为1.91%、3.89%、6.33%。[结论]11%砜嘧·精喹OF在使用剂量下于杂草苗后2~5叶期进行茎叶喷雾处理对马铃薯安全,未见药害发生,试验剂量下各处理对马铃薯生长均无不良影响,除草效果好,具有一定的增产作用,可以作为马铃薯田的主要除草剂进行使用。

[Aims] This study aims to determinate the safety and herbicidal activities and yield in potato of rimsulfuron. quizalofop-P 11% OF. [Methods] The effects of rimsulfuron, quizalofop-P 11% OF on potato＇s safety, weed control and yield were determined by field trials. [Results] At 45 d after treatment, the average fresh weight control effect of rimsulfuron ＂quizalofop-P 11% OF against annual grasses of barnyard grass, grass and broadleaf weeds including Echinochloa crusgalli, Setaria viridis, Commelina communis, Chenopodium album and Polygonum sibiricum at active ingredient dosages of 900, 2250, 3600 mL/ha was 76.67, 81.89 and 85.89%, respectively. Potato yield increased significantly with increasing rate of 1.91, 3.89 and 6.33%, respectively. [Conclusions] Rimsulfuron·quizalofop-P 11% OF can be used at 2 to 5 leaf stage in potato field. It was safe and no phytotoxicity on potato with good weeding and increase nroduction, which can be used as the major herbicide of potato feild.